150 Million Adults Worldwide Would Migrate To The US

from Gallup, "150 Million Adults Worldwide Would Migrate to the US: Potential migrants most likely to be Chinese, Nigerian, and Indian" by Jon Clifton:

About 13% of the world's adults -- or more than 640 million people -- say they would like to leave their country permanently. Roughly 150 million of them say they would like to move to the U.S. -- giving it the undisputed title as the world's most desired destination for potential migrants since Gallup started tracking these patterns in 2007.